Inverse of two's complement

[Satvikpai]

Hi I am trying to convert a U32 two's complement number back to a negative integer. 

Can someone guide me on this?

[GerdW · Accepted solution]

Hi Satvikpai,

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@Satvikpai wrote:

Hi I am trying to convert a U32 two's complement number back to a negative integer. 

Can someone guide me on this?

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An U32 is (as the name says) an UNSIGNED value, so it cannot be negative!

Maybe you want to convert the U32 value into an I32 value (using ToI32)?

[jjohn1]

If you somehow got a signed integer stored in a U32 (read from a file to the wrong type?), you can use a type cast to convert it to I32:

 

[GerdW]

Hi JJohn,

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@jjohn1 wrote:

you can use a type cast to convert it to I32:

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ToI32 does the very same job - and (probably) more efficient and with less BD space…

[jjohn1]

Thanks for the note onToI32.  I did not know how it would handle values with the sign bit set.  On a good day you learn something new.  Thanks!